<template>
  <div class="header-box">
    <div class="header">
      <div class="content">
        <div class="logo full-left">
          <router-link to="/"><img src="/static/image/logo.svg" alt=""></router-link>
        </div>
        <ul class="nav full-left">
          <li v-for="nav in nav_list">
            <!--区分站内、站外链接-->
            <span v-if="nav.is_site"><a :href="nav.link" target="_blank" >{{nav.title}}</a></span>
            <span v-else><router-link :to="nav.link">{{nav.title}}</router-link></span>
          </li>
        </ul>
        <!-- 登录成功展示的 -->
        <div v-if="token" class="login-bar full-right">
          <div class="shop-cart full-left">
            <span class="shop-cart-total">{{$store.state.cart_length}}</span>
            <span class="shop-cart-total"></span>
            <img src="/static/image/cart.svg" alt="">
            <span><router-link to="/cart">购物车</router-link></span>
          </div>
          <div class="login-box login-box1 full-left">
            <router-link to="">学习中心</router-link>
            <el-menu width="200" class="member el-menu-demo" mode="horizontal">
              <el-submenu index="2">
                <template slot="title"><img src="/static/image/logo@2x.png" alt=""></template>
                <el-menu-item index="2-1">我的账户</el-menu-item>
                <el-menu-item index="2-2">
                  <router-link to="/user/order">我的订单</router-link>
                </el-menu-item>
                <el-menu-item index="2-3">我的优惠卷</el-menu-item>
                <el-menu-item index="2-3"><span @click="logoutHander">退出登录</span></el-menu-item>
              </el-submenu>
            </el-menu>
          </div>
        </div>
        <!-- 登录注册功能 -->
        <div v-else class="login-bar full-right">
          <div class="shop-cart full-left">
            <img src="/static/image/cart.svg" alt="">
            <span><router-link to="/cart">购物车</router-link></span>
          </div>
          <div class="login-box full-left">
            <router-link to="/user/login">登录</router-link>
            &nbsp;|&nbsp;
            <router-link to="/user/register">立即注册</router-link>
          </div>
        </div>

      </div>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Header",
    data(){
      return{
        token:"",
        nav_list: [],
      }
    },
    created() {
      this.check_user_login();
      this.get_nav();
    },
    methods:{
      check_user_login(){
        // 获取用户的登录状态
        this.token = sessionStorage.user_token || localStorage.user_token;
        return this.token;
      },
      get_nav(){
        this.$axios.get(`${this.$settings.HOST}/nav/header/`,{}).then(response=>{
          this.nav_list = response.data;
        }).catch(error=>{
          console.log(error.response);
        })
      },
      logoutHander(){
        // 退出登录
        localStorage.removeItem("user_token");
        localStorage.removeItem("user_id");
        localStorage.removeItem("user_name");
        sessionStorage.removeItem("user_token");
        sessionStorage.removeItem("user_id");
        sessionStorage.removeItem("user_name");
        this.check_user_login();
      }
    }
  }
</script>

<style scoped>
  .header-box{
    height: 80px;
  }
  .header{
    width: 100%;
    height: 80px;
    box-shadow: 0 0.5px 0.5px 0 #c9c9c9;
    position: fixed;
    top:0;
    left: 0;
    right:0;
    margin: auto;
    z-index: 99;
    background: #fff;
  }
  .header .content{
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
  }
  .header .content .logo{
    height: 80px;
    line-height: 80px;
    margin-right: 50px;
    cursor: pointer; /* 设置光标的形状为爪子 */
  }
  .header .content .logo img{
    vertical-align: middle;
  }
  .header .nav li{
    float: left;
    height: 80px;
    line-height: 80px;
    margin-right: 30px;
    font-size: 16px;
    color: #4a4a4a;
    cursor: pointer;
  }
  .header .nav li span{
    padding-bottom: 16px;
    padding-left: 5px;
    padding-right: 5px;
  }
  .header .nav li span a{
    display: inline-block;
  }
  .header .nav li .this{
    color: #4a4a4a;
    border-bottom: 4px solid #ffc210;
  }
  .header .nav li:hover span{
    color: #000;
  }
  .header .login-bar{
    height: 80px;
  }
  .header .login-bar .shop-cart{
    margin-right: 20px;
    border-radius: 17px;
    background: #f7f7f7;
    cursor: pointer;
    font-size: 14px;
    height: 28px;
    width: 120px;
    margin-top: 30px;
    line-height: 32px;
    text-align: center;
  }
  .header .login-bar .shop-cart:hover{
    background: #f0f0f0;
  }
  .header .login-bar .shop-cart img{
    width: 15px;
    margin-right: 4px;
    margin-left: 6px;
  }
  .header .login-bar .shop-cart span{
    margin-right: 6px;
  }
  .header .login-bar .login-box{
    margin-top: 32px;
  }
  .header .login-bar .login-box span{
    color: #4a4a4a;
    cursor: pointer;
  }
  .header .login-bar .login-box span:hover{
    color: #000000;
  }
  .member{
    display: inline-block;
    height: 34px;
    margin-left: 20px;
  }
  .member img{
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-block;
  }
  .member img:hover{
    border: 1px solid yellow;
  }
  .header .login-bar .login-box1{
    margin-top: 16px;
  }
</style>

